Foundation NSTemporaryDirectory() can return nil, but is imported to Swift as non-optional #IUO

Originator:chris
Number:rdar://24095436 Date Originated:2016-01-07
Status:Duplicate of 24026087 (Open) Resolved:
Product:iOS SDK Product Version:iOS SDK 9.2, OS X SDK 10.11, Xcode 7.2
Classification: Reproducible:Always
 
Summary:
Per the Foundation documentation on iOS and OSX, NSTemporaryDirectory() can return nil: "If no such directory is currently available, returns nil."

— https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/#//apple_ref/c/func/NSTemporaryDirectory

But in Swift, the function returns the type String, not an optional or implicitly-unwrapped optional:

public func NSTemporaryDirectory() -> String

Steps to Reproduce:
Navigate to the Swift interface for NSTemporaryDirectory(), or visit the Foundation documentation for that function: https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/#//apple_ref/c/func/NSTemporaryDirectory

Expected Results:
The Swift signature for NSTemporaryDirectory should look like:

public func NSTemporaryDirectory() -> String?

or like:

public func NSTemporaryDirectory() -> String!

Actual Results:
The Swift signature for NSTemporaryDirectory looks like:

public func NSTemporaryDirectory() -> String


Version:
iOS SDK 9.2, OS X SDK 10.11, Xcode 7.2

Comments

Engineering has determined that your bug report is a duplicate of another issue and will be closed.

By chris at Jan. 19, 2016, 3:39 p.m. (reply...)

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